package org.example.util;

import java.sql.Timestamp;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;

public class DateUtils {
    /**
     * 一小时的秒数
     */
    private static final int HOUR_SECOND = 60 * 60;

    /**
     * 一分钟的秒数
     */
    private static final int MINUTE_SECOND = 60;

    /**
     * @Author: ljh
     * @Description:获取任意天后的时间
     * @DateTime: 18:52 2022/11/23
     * @Params: day 1表示后一天 -1表示前一天
     * @Return
     */
    public static String getDay(int day){
        Calendar calendar2 = Calendar.getInstance();
        SimpleDateFormat sdf2 = new SimpleDateFormat("yyyy-MM-dd");
        calendar2.add(Calendar.DAY_OF_MONTH, day);
        String date = sdf2.format(calendar2.getTime());
        return date;
    }

    /**
     * 根据秒数获取时间串
     * @param second (eg: 100s)
     * @return (eg: 00:01:40)
     */
    public static String getTimeStrBySecond(Long second) {
        if (second <= 0) {

            return "00:00:00";
        }

        StringBuilder sb = new StringBuilder();
        Long hours = second / HOUR_SECOND;
        if (hours > 0) {

            second -= hours * HOUR_SECOND;
        }

        Long minutes = second / MINUTE_SECOND;
        if (minutes > 0) {

            second -= minutes * MINUTE_SECOND;
        }

        return (hours >= 10 ? (hours + "")
                : ("0" + hours) + ":" + (minutes >= 10 ? (minutes + "") : ("0" + minutes)) + ":"
                + (second >= 10 ? (second + "") : ("0" + second)));
    }

    //获取当天的开始时间
    public static Date getDayBegin() {
        Calendar cal = new GregorianCalendar();
        cal.set(Calendar.HOUR_OF_DAY, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);
        return cal.getTime();
    }

    //获取当天的结束时间
    public static Date getDayEnd() {
        Calendar cal = new GregorianCalendar();
        cal.set(Calendar.HOUR_OF_DAY, 23);
        cal.set(Calendar.MINUTE, 59);
        cal.set(Calendar.SECOND, 59);
        return cal.getTime();
    }

    //获取昨天的开始时间
    public static Date getBeginDayOfYesterday() {
        Calendar cal = new GregorianCalendar();
        cal.setTime(getDayBegin());
        cal.add(Calendar.DAY_OF_MONTH, -1);
        return cal.getTime();
    }

    //获取昨天的结束时间
    public static Date getEndDayOfYesterDay() {
        Calendar cal = new GregorianCalendar();
        cal.setTime(getDayEnd());
        cal.add(Calendar.DAY_OF_MONTH, -1);
        return cal.getTime();
    }

    //获取明天的开始时间
    public static Date getBeginDayOfTomorrow() {
        Calendar cal = new GregorianCalendar();
        cal.setTime(getDayBegin());
        cal.add(Calendar.DAY_OF_MONTH, 1);

        return cal.getTime();
    }

    //获取明天的结束时间
    public static Date getEndDayOfTomorrow() {
        Calendar cal = new GregorianCalendar();
        cal.setTime(getDayEnd());
        cal.add(Calendar.DAY_OF_MONTH, 1);
        return cal.getTime();
    }

    //获取本周的开始时间
    @SuppressWarnings("unused")
    public static Date getBeginDayOfWeek() {
        Date date = new Date();
        if (date == null) {
            return null;
        }
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        int dayofweek = cal.get(Calendar.DAY_OF_WEEK);
        if (dayofweek == 1) {
            dayofweek += 7;
        }
        cal.add(Calendar.DATE, 2 - dayofweek);
        return getDayStartTime(cal.getTime());
    }

    //获取本周的结束时间
    public static Date getEndDayOfWeek() {
        Calendar cal = Calendar.getInstance();
        cal.setTime(getBeginDayOfWeek());
        cal.add(Calendar.DAY_OF_WEEK, 6);
        Date weekEndSta = cal.getTime();
        return getDayEndTime(weekEndSta);
    }

    //获取上周的开始时间
    @SuppressWarnings("unused")
    public static Date getBeginDayOfLastWeek() {
        Date date = new Date();
        if (date == null) {
            return null;
        }
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        int dayofweek = cal.get(Calendar.DAY_OF_WEEK);
        if (dayofweek == 1) {
            dayofweek += 7;
        }
        cal.add(Calendar.DATE, 2 - dayofweek - 7);
        return getDayStartTime(cal.getTime());
    }

    //获取上周的结束时间
    public static Date getEndDayOfLastWeek() {
        Calendar cal = Calendar.getInstance();
        cal.setTime(getBeginDayOfLastWeek());
        cal.add(Calendar.DAY_OF_WEEK, 6);
        Date weekEndSta = cal.getTime();
        return getDayEndTime(weekEndSta);
    }

    //获取本月的开始时间
    public static Date getBeginDayOfMonth() {
        Calendar calendar = Calendar.getInstance();
        calendar.set(getNowYear(), getNowMonth() - 1, 1);
        return getDayStartTime(calendar.getTime());
    }

    //获取本月的结束时间
    public static Date getEndDayOfMonth() {
        Calendar calendar = Calendar.getInstance();
        calendar.set(getNowYear(), getNowMonth() - 1, 1);
        int day = calendar.getActualMaximum(5);
        calendar.set(getNowYear(), getNowMonth() - 1, day);
        return getDayEndTime(calendar.getTime());
    }

    //获取上月的开始时间
    public static Date getBeginDayOfLastMonth() {
        Calendar calendar = Calendar.getInstance();
        calendar.set(getNowYear(), getNowMonth() - 2, 1);
        return getDayStartTime(calendar.getTime());
    }

    //获取上月的结束时间
    public static Date getEndDayOfLastMonth() {
        Calendar calendar = Calendar.getInstance();
        calendar.set(getNowYear(), getNowMonth() - 2, 1);
        int day = calendar.getActualMaximum(5);
        calendar.set(getNowYear(), getNowMonth() - 2, day);
        return getDayEndTime(calendar.getTime());
    }

    //获取本年的开始时间
    public static Date getBeginDayOfYear() {
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.YEAR, getNowYear());
        // cal.set
        cal.set(Calendar.MONTH, Calendar.JANUARY);
        cal.set(Calendar.DATE, 1);

        return getDayStartTime(cal.getTime());
    }

    //获取本年的结束时间
    public static Date getEndDayOfYear() {
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.YEAR, getNowYear());
        cal.set(Calendar.MONTH, Calendar.DECEMBER);
        cal.set(Calendar.DATE, 31);
        return getDayEndTime(cal.getTime());
    }

    //获取某个日期的开始时间
    public static Timestamp getDayStartTime(Date d) {
        Calendar calendar = Calendar.getInstance();
        if (null != d) {
            calendar.setTime(d);
        }
        calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
        calendar.set(Calendar.MILLISECOND, 0);
        return new Timestamp(calendar.getTimeInMillis());
    }

    //获取某个日期的结束时间
    public static Timestamp getDayEndTime(Date d) {
        Calendar calendar = Calendar.getInstance();
        if (null != d) {
            calendar.setTime(d);
        }
        calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), 23, 59, 59);
        calendar.set(Calendar.MILLISECOND, 999);
        return new Timestamp(calendar.getTimeInMillis());
    }

    //获取今年是哪一年
    public static Integer getNowYear() {
        Date date = new Date();
        GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
        gc.setTime(date);
        return Integer.valueOf(gc.get(1));
    }

    //获取本月是哪一月
    public static int getNowMonth() {
        Date date = new Date();
        GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
        gc.setTime(date);
        return gc.get(2) + 1;
    }

    //两个日期相减得到的天数
    public static int getDiffDays(Date beginDate, Date endDate) {

        if (beginDate == null || endDate == null) {
            throw new IllegalArgumentException("getDiffDays param is null!");
        }

        long diff = (endDate.getTime() - beginDate.getTime())
                / (1000 * 60 * 60 * 24);

        int days = new Long(diff).intValue();

        return days;
    }

    //两个日期相减得到的毫秒数
    public static long dateDiff(Date beginDate, Date endDate) {
        long date1ms = beginDate.getTime();
        long date2ms = endDate.getTime();
        return date2ms - date1ms;
    }

    //获取两个日期中的最大日期
    public static Date max(Date beginDate, Date endDate) {
        if (beginDate == null) {
            return endDate;
        }
        if (endDate == null) {
            return beginDate;
        }
        if (beginDate.after(endDate)) {
            return beginDate;
        }
        return endDate;
    }

    //获取两个日期中的最小日期
    public static Date min(Date beginDate, Date endDate) {
        if (beginDate == null) {
            return endDate;
        }
        if (endDate == null) {
            return beginDate;
        }
        if (beginDate.after(endDate)) {
            return endDate;
        }
        return beginDate;
    }

    //返回某月该季度的第一个月
    public static Date getFirstSeasonDate(Date date) {
        final int[] SEASON = {1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4};
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        int sean = SEASON[cal.get(Calendar.MONTH)];
        cal.set(Calendar.MONTH, sean * 3 - 3);
        return cal.getTime();
    }

    //返回某个日期下几天的日期
    public static Date getNextDay(Date date, int i) {
        Calendar cal = new GregorianCalendar();
        cal.setTime(date);
        cal.set(Calendar.DATE, cal.get(Calendar.DATE) + i);
        return cal.getTime();
    }

    //返回某个日期前几天的日期
    public static Date getFrontDay(Date date, int i) {
        Calendar cal = new GregorianCalendar();
        cal.setTime(date);
        cal.set(Calendar.DATE, cal.get(Calendar.DATE) - i);
        return cal.getTime();
    }

    public static void main(String[] args) {
        System.out.println(getFrontDay(new Date(),1));
    }

    /**
     * 获取指定日期是周几
     * @param date
     * @return
     */
    public static Integer getDayNumOfTheWeek(Date date){
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK)-1;
        return dayOfWeek;
    }
    /**
     * 获取一个月以后的时间
     *
     * @param repeatDate
     * @return
     */
    public static Date getLastMonthDate(Date repeatDate) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(repeatDate);
        calendar.add(Calendar.MONTH, 1);
        Date dt1 = calendar.getTime();
        return calendar.getTime();
    }

    /**
     * 获取指定月以后的时间
     *
     * @param repeatDate
     * @return
     */
    public static Date getMonthDate(Date repeatDate,int i) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(repeatDate);
        calendar.add(Calendar.MONTH, i);
        Date dt1 = calendar.getTime();
        return calendar.getTime();
    }

    /**
     * 获取下一个季度以后的时间
     *
     * @param repeatDate
     * @return
     */
    public static Date getLastQuarterDate(Date repeatDate) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(repeatDate);
        calendar.add(Calendar.MONTH, 3);
        Date dt1 = calendar.getTime();
        return calendar.getTime();
    }

    /**
     * 获取一年后的时间
     *
     * @param repeatDate
     * @return
     */
    public static Date getLastYearDate(Date repeatDate) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(repeatDate);
        calendar.add(Calendar.YEAR, 1);
        Date dt1 = calendar.getTime();
        return calendar.getTime();
    }

    /**
     * 获取指定日期几年后的时间
     *
     * @param repeatDate
     * @return
     */
    public static Date getAppointYearDate(Date repeatDate,Integer years) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(repeatDate);
        calendar.add(Calendar.YEAR, years);
        Date dt1 = calendar.getTime();
        return calendar.getTime();
    }


    //获取某年某月到某年某月按天的切片日期集合（间隔天数的集合）
    @SuppressWarnings({"rawtypes", "unchecked"})
    public static List getTimeList(int beginYear, int beginMonth, int endYear,
                                   int endMonth, int k) {
        List list = new ArrayList();
        if (beginYear == endYear) {
            for (int j = beginMonth; j <= endMonth; j++) {
                list.add(getTimeList(beginYear, j, k));

            }
        } else {
            {
                for (int j = beginMonth; j < 12; j++) {
                    list.add(getTimeList(beginYear, j, k));
                }

                for (int i = beginYear + 1; i < endYear; i++) {
                    for (int j = 0; j < 12; j++) {
                        list.add(getTimeList(i, j, k));
                    }
                }
                for (int j = 0; j <= endMonth; j++) {
                    list.add(getTimeList(endYear, j, k));
                }
            }
        }
        return list;
    }

    //获取某年某月按天切片日期集合（某个月间隔多少天的日期集合）
    @SuppressWarnings({"unchecked", "rawtypes"})
    public static List getTimeList(int beginYear, int beginMonth, int k) {
        List list = new ArrayList();
        Calendar begincal = new GregorianCalendar(beginYear, beginMonth, 1);
        int max = begincal.getActualMaximum(Calendar.DATE);
        for (int i = 1; i < max; i = i + k) {
            list.add(begincal.getTime());
            begincal.add(Calendar.DATE, k);
        }
        begincal = new GregorianCalendar(beginYear, beginMonth, max);
        list.add(begincal.getTime());
        return list;
    }

    /**
     * 获取当前日期所在一周日期集合
     *
     * @param date Date
     * @return Map<Date, String> key:日期 value 星期
     */
    public static List<String> getAllDateOfWeek(Date date) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        List<String> dateList = new ArrayList<>();
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);

        //若是星期日，则减一天
        if(1 == cal.get(Calendar.DAY_OF_WEEK)) {
            cal.add(Calendar.DAY_OF_MONTH, -1);
        }
        cal.setFirstDayOfWeek(Calendar.MONDAY);
        int day = cal.get(Calendar.DAY_OF_WEEK);
        cal.add(Calendar.DATE, cal.getFirstDayOfWeek() - day);

        for(int i = 1; i <= 7; i++){
            int number = cal.get(Calendar.DAY_OF_WEEK);
            dateList.add(sdf.format(cal.getTime()));
            cal.add(Calendar.DATE, 1);
        }
        return dateList;
    }

    /**
     * 获取某年某月开始时间 date格式"yyyy-MM"
     * @param date
     * @return
     */
    public static Date getMonthStartTime(String date) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        int year = Integer.parseInt(date.substring(0, 4));
        int month = Integer.parseInt(date.substring(5));
        String dateStr = String.valueOf(year) + "-" + String.valueOf(month) + "-0" + String.valueOf(1);
        Timestamp dayStartTime = null;
        try {
            Date startTime = sdf.parse(dateStr);
            dayStartTime = DateUtils.getDayStartTime(startTime);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return dayStartTime;
    }

    /**
     * 获取某年某月结束时间 date格式"yyyy-MM"
     * @param date
     * @return
     */
    public static Date getMonthEndTime(String date) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        int year = Integer.parseInt(date.substring(0, 4));
        int month = Integer.parseInt(date.substring(5));
        Calendar a = Calendar.getInstance();
        a.set(Calendar.YEAR, year);
        a.set(Calendar.MONTH, month - 1);
        a.set(Calendar.DATE, 1);
        a.roll(Calendar.DATE, -1);
        int days = a.get(Calendar.DATE);
        String dateStr = String.valueOf(year) + "-" + String.valueOf(month) + "-" +String.valueOf(days);
        Timestamp dayEndTime = null;
        try {
            Date endTime = sdf.parse(dateStr);
            dayEndTime = DateUtils.getDayEndTime(endTime);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return dayEndTime;
    }


    /**
     * 获取某年某月日期集合
     * @param year
     * @param month
     * @return
     */
    public static List<String> getMonthFullDay(int year , int month) {
        SimpleDateFormat dateFormatYYYYMMDD = new SimpleDateFormat("yyyy-MM-dd");
        List<String> fullDayList = new ArrayList<>(32);
        // 获得当前日期对象
        Calendar cal = Calendar.getInstance();
        cal.clear();// 清除信息
        cal.set(Calendar.YEAR, year);
        // 1月从0开始
        cal.set(Calendar.MONTH, month - 1);
        // 当月1号
        cal.set(Calendar.DAY_OF_MONTH, 1);
        int count = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
        for (int j = 1; j <= count; j++) {
            fullDayList.add(dateFormatYYYYMMDD.format(cal.getTime()));
            cal.add(Calendar.DAY_OF_MONTH, 1);
        }
        return fullDayList;

    }

    /**
     * 传入两个时间范围，返回这两个时间范围内的所有日期，并保存在一个集合中
     *
     * @param beginTime
     * @param endTime
     * @return
     * @throws Exception
     */
    public static List<String> findEveryDay(String beginTime, String endTime)
            throws Exception {
        //创建一个放所有日期的集合
        List<String> dates = new ArrayList();

        //创建时间解析对象规定解析格式
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

        //将传入的时间解析成Date类型,相当于格式化
        Date dBegin = sdf.parse(beginTime);
        Date dEnd = sdf.parse(endTime);

        //将格式化后的第一天添加进集合
        dates.add(sdf.format(dBegin));

        //使用本地的时区和区域获取日历
        Calendar calBegin = Calendar.getInstance();

        //传入起始时间将此日历设置为起始日历
        calBegin.setTime(dBegin);

        //判断结束日期前一天是否在起始日历的日期之后
        while (dEnd.after(calBegin.getTime())) {

            //根据日历的规则:月份中的每一天，为起始日历加一天
            calBegin.add(Calendar.DAY_OF_MONTH, 1);

            //得到的每一天就添加进集合
            dates.add(sdf.format(calBegin.getTime()));
            //如果当前的起始日历超过结束日期后,就结束循环
        }
        return dates;
    }


}
